JPS6423613A - Dc restoration circuit - Google Patents
Dc restoration circuitInfo
- Publication number
- JPS6423613A JPS6423613A JP17929987A JP17929987A JPS6423613A JP S6423613 A JPS6423613 A JP S6423613A JP 17929987 A JP17929987 A JP 17929987A JP 17929987 A JP17929987 A JP 17929987A JP S6423613 A JPS6423613 A JP S6423613A
- Authority
- JP
- Japan
- Prior art keywords
- adder
- output
- digital signals
- low
- discriminator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/10009—Improvement or modification of read or write signals
- G11B20/10046—Improvement or modification of read or write signals filtering or equalising, e.g. setting the tap weights of an FIR filter
- G11B20/10203—Improvement or modification of read or write signals filtering or equalising, e.g. setting the tap weights of an FIR filter baseline correction
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
Abstract
PURPOSE:To accurately compensate the base-line fluctuation of digital signals caused by interception of low frequencies so as to prevent wrong data, by adding the output of a 2nd adder to the digital signals at a 1st adder. CONSTITUTION:The titled circuit is provided with the 1st adder 2 which inputs transmitted or reproduced digital signals, a discriminator 5 which discriminates data from the output of the adder 2, a band-pass filter 9 and low-pass filter 10 which extract the low-frequency components from the output of the discriminator 5 after band division, and a 2nd adder 11 which adds the outputs of the two filters to each other. This DC restoration circuit is constituted to impress the output of the 2nd adder 11 upon the 1st adder 2. Therefore, compensation can be performed on transmitted or reproduced digital signals even when their low-frequency intercepting characteristic is complicated and wrong data are reduced.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17929987A JPS6423613A (en) | 1987-07-17 | 1987-07-17 | Dc restoration circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17929987A JPS6423613A (en) | 1987-07-17 | 1987-07-17 | Dc restoration circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6423613A true JPS6423613A (en) | 1989-01-26 |
Family
ID=16063398
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP17929987A Pending JPS6423613A (en) | 1987-07-17 | 1987-07-17 | Dc restoration circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6423613A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0393633A2 (en) * | 1989-04-19 | 1990-10-24 | Sanyo Electric Co., Ltd. | Low frequency component restoration circuit for restoring and compensating for low frequency component lost in digital signal transmission system |
EP0830669A1 (en) * | 1995-05-26 | 1998-03-25 | Maxtor Corporation | Mr head read signal preconditioning circuitry |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6116761B2 (en) * | 1975-06-06 | 1986-05-02 | Mitsubishi Reiyon Kk | |
JPS61123064A (en) * | 1984-11-20 | 1986-06-10 | Sanyo Electric Co Ltd | Digital signal processing device |
-
1987
- 1987-07-17 JP JP17929987A patent/JPS6423613A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6116761B2 (en) * | 1975-06-06 | 1986-05-02 | Mitsubishi Reiyon Kk | |
JPS61123064A (en) * | 1984-11-20 | 1986-06-10 | Sanyo Electric Co Ltd | Digital signal processing device |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0393633A2 (en) * | 1989-04-19 | 1990-10-24 | Sanyo Electric Co., Ltd. | Low frequency component restoration circuit for restoring and compensating for low frequency component lost in digital signal transmission system |
EP0830669A1 (en) * | 1995-05-26 | 1998-03-25 | Maxtor Corporation | Mr head read signal preconditioning circuitry |
EP0830669A4 (en) * | 1995-05-26 | 1998-12-23 | Maxtor Corp | Mr head read signal preconditioning circuitry |
US5943177A (en) * | 1995-05-26 | 1999-08-24 | Maxtor Corporation | MR head read signal preconditioning circuitry for reducing pulse -to-pulse baseline distortion |
US6366417B1 (en) | 1995-05-26 | 2002-04-02 | Maxtor Corporation | Mr head read signal preconditioning circuitry |
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